Algoroo

Algoroo is a Google search algorithm tracking tool developed by DEJAN, designed to help users follow changes in search result volatility. It monitors a carefully selected set of keywords across Google search results and combines both upward and downward movements into a single measurement called “roo.” A high roo value indicates that Google’s results are unusually volatile, while a low value generally reflects a more ordinary, stable day with less likelihood of noticeable algorithm-related change.

The service presents search volatility through a timeline and daily summaries, with detected events highlighted in orange or red to make periods of increased movement easier to identify. Algoroo covers Google properties including google.com and google.com.au, and provides desktop and mobile views. When Google publicly discloses an internal update or algorithm change, DEJAN adds an annotation to the graph, helping users relate observed fluctuations to known announcements. Algoroo is a monitoring resource for understanding movement in Google search results; its measurements indicate volatility rather than confirming the cause of every change.